After 4MEN's first twos teasers featuring Jin Bora and Kim Sung Oh, Happyface Entertainment has revealed their third video teaser for "It's Not Working" on their official YouTube channel. Actor Jin Yi Han appeared as the lead role in this teaser for 4MEN's third title track, "It's Not Working." The track was written and composed by 4MEN's maknae, Shin Yong Jae, and features lyrics expressing sorrow about a love that he can't let go, as shown by Jin Yi Han in the teaser. This is the third title track from a total of four title tracks from their upcoming 4th full-length album, 'The Artist.' and they will release their final video teaser tomorrow for their fourth title track. Their album will be released on June 7th.